Hostname & hosts file update

To reduce chance of incidents when instances try to resolve their own hostname using old private traveloka.com zone records (see https://29022131.atlassian.net/browse/TOSD-4062), Site-Infra has updated internal hostnames and /etc/hosts files of a group of instances to ensure they refer to themselves using new hostname ending with .main.tvlk.cloud.

Impact:

Resources:

This change will be executed on: